POJ 2105 IP Address（水题）

题目链接

Description

Suppose you are reading byte streams from any device, representing IP addresses. Your task is to convert a 32 characters long sequence of '1s' and '0s' (bits) to a dotted decimal format. A dotted decimal format for an IP address is form by grouping 8 bits at a time and converting the binary representation to decimal representation. Any 8 bits is a valid part of an IP address. To convert binary numbers to decimal numbers remember that both are positional numerical systems, where the first 8 positions of the binary systems are: 

27   26  25  24  23   22  21  20 

128 64  32  16  8   4   2   1 

Input

The input will have a number N (1<=N<=9) in its first line representing the number of streams to convert. N lines will follow.

Output

The output must have N lines with a doted decimal IP address. A dotted decimal IP address is formed by grouping 8 bit at the time and converting the binary representation to decimal representation.

Sample Input

4
00000000000000000000000000000000 
00000011100000001111111111111111 
11001011100001001110010110000000 
01010000000100000000000000000001 

Sample Output

0.0.0.0
3.128.255.255
203.132.229.128
80.16.0.1

题意 ：

把给出的32位2进制数每8位已转换，转换成4个十进制数，以IP地址的形式输出。

解题思路：

每8位一遍历相加。

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                                ____/`---'\____
                              .   ' \\| |// `.
                               / \\||| : |||// \
                             / _||||| -:- |||||- \
                               | | \\\ - /// | |
                             | \_| ''\---/'' | |
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                       | | : `- \`.;`\ _ /`;.`/ - ` : | |
                         \ \ `-. \_ __\ /__ _/ .-` / /
                 ======`-.____`-.___\_____/___.-`____.-'======
                                    `=---='

                 .............................................
*/
#include